The invention relates to a method for preparing aluminium oxide ceramics with good wear-resisting property, that is, low-cost soluble salt is added in slurry which takes water and aluminum oxide as main raw material, and then dehydration pelleting, molding and sintering are carried out; the specific method is that: one working procedure is added after ball-milling procedure and before pelleting procedure in the original preparation process; proper salt which can be dissolved in water and generates metal ions is added in the slurry with qualified fineness and viscosity by ball-milling; the added metal salt can be one, part or all of magnesium salt, calcium salt, yttrium salt, aluminum salt, strontium salt, barium salt, zircon salt, cerium alt and lanthanum salt, the total adding amount accounts for 0.1-30 percent of the alumina powder material, and the optimized adding amount is from 2 percent to 20 percent; the added precipitators can be one, partial or all of sodium hydroxide, sodium carbonate, sodium bicarbonate, sodium fluoride, sodium sulfide, sodium silicate, sodium aluminate, potassium hydroxide, potassium carbonate, potassium silicate, lithium hydroxide, lithium carbonate, calcium hydroxide, calcium oxide, barium hydroxide, ammonia, ammonium carbonate, ammonium hydrogencarbonate, ammonium fluoride, ammonium sulfide and carbamide, the total adding amount accounts for 0.05-20 percent of the alumina powder material quantity, and the optimized adding amount is 1-10 percent.